Athena S410000303002 Aluminium Silencer 60x250 mm with Internal Mouth 20 mm per 50-80 ccAthena S410000303002 Aluminium Silencer 60x250 mm with Internal Mouth 20 mm per 50 80 cc Athena offers exhausts designed to complete the thermodynamic cycle in the engine and to achieve the best performance. Light and at the same time strong, Athena exhaust systems are tested on the bench and on the road to ensure performance and reliability. Some models are homologated for use in public roads. Technical features Net Weight (Kg) 0. 89